Sure, it's worked pretty well with the Xbox360 didn't it? Lol.
Pokemon achievements: Win 1,000 battles in a row without turning off game, curb stomping 10 pikachus in a minute, chasing bellsprouts with hedge clippers, etc. <3
But seriously, question; what would you think of a World Cup type deal? It's probably already been either mentioned, or covered by the Team, but after snatching up every badge (Supposing we have enough hours to spend, lol) we could sign up for an Online world tournament; by choosing.... Say, 20 players who have around at least 3 Lv. 70 Pokemon, they would duke it in a battle royale style tournament. The minner could get.... Hell, I dunno, a shiny name plate?
Again, if it's already been covered, shoot me or ignore me. Peace.